JP2003115895A - Communication device, communication device control method, and communication device control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the erroneous connection of a network cable to both ISDN and Ethernet(R) interfaces in communication equipment having such interfaces. SOLUTION: In the communication equipment having an ISDN connector 13 to connect an ISDN cable and an Ethernet(R) connector 15 to connect an Ethernet(R) cable, an ISDN power feeding detecting circuit 16 for detecting ISDN power feeding is connected to the Ethernet(R) connector 15, and a warning circuit 17 is provided for warning to a user when ISDN power feeding is detected by the ISDN power feeding detecting circuit 16.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to ISDN and LA.
The present invention relates to a communication device having both N (hereinafter, referred to as Ethernet, which is a popular trademark name) communication interface, a control method thereof, and a control program thereof.

[0002]

2. Description of the Related Art As communication equipment connected to ISDN,
Conventionally, digital telephones, TAs (terminal adapters) for connecting legacy analog communication equipment, ISDN
Routers / bridges, G4 facsimile machines, etc. are known. As an S point interface for these devices, the standard specifies that an RJ-45 connector be used.

On the other hand, devices such as computers and printers are used by connecting to a LAN. Further, there is a product of a form that can be used as a network printer under the name of a digital multi-function peripheral even with a G4 facsimile machine, and such a facsimile machine is used by being connected not only to a communication line but also to a LAN configured by Ethernet or the like. .

In the standard such as 10BASE-T and 100BASE-TX of this Ethernet, the RJ whose physical interface is exactly the same as that of ISDN is used.
A -45 connector is used.

Therefore, a communication device such as a G4 facsimile machine has an RJ-45 connector of exactly the same shape as an interface for communication, and the ISD is connected via an 8 Pin modular cable having the same connector connecting portion.
There are devices that are used by connecting to N and Ethernet.

[0006]

As described above, the ISD
In N and Ethernet, the physical shapes of the interfaces are exactly the same, and in a communication device having both interfaces, such as a G4 facsimile machine, there is a possibility that an ISDN connector and an Ethernet connector having the same connector shape may be erroneously connected. there were.

In particular, an ISDN S-point interface is normally connected to DC (around 40V: I
TU-T Recommendation I. 430) is supplied,
If the ISDN cable is connected to the Ethernet connector, the Ethernet network interface circuit may be destroyed.

The above problem is due to the ISDN router / interface having both ISDN and Ethernet interfaces.
It is also common to network devices such as bridges.

The object of the present invention is to solve the above problems by
In a communication device having both SDN and Ethernet interfaces, it is intended to prevent erroneous connection of a network cable to these interfaces.

[0010]

In order to solve the above-mentioned problems, according to the present invention, an I connected to an ISDN cable is used.
A communication device having an SDN connector and an Ethernet connector connected to an Ethernet cable, a control method therefor, and a control program therefor, comprising:
A configuration is adopted in which the signal status of the connector or the Ethernet connector is monitored, and a warning is issued when the connection status of the ISDN connector or the Ethernet connector is not appropriate according to the monitoring result.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a configuration of a network (line) interface portion of a G4 facsimile apparatus as an example of a communication device adopting the present invention.

In FIG. 1, reference numeral 11 is a facsimile machine (G4 facsimile machine) having both ISDN and Ethernet interfaces.

The facsimile apparatus 11 includes an ISDN connector 13 for connecting an ISDN cable and an Ethernet cable (10BASE-T, 100B).
It has an Ethernet connector 15 for connecting an ASE-TX). The ISDN connector 13 and the Ethernet connector 15 are composed of RJ-45 connectors having the same physical shape as described above.

The ISDN connector 13 is connected to an ISDN communication control circuit 12 for controlling communication with ISDN, and the Ethernet communication control circuit 14 is connected to an Ethernet communication control circuit 14 for controlling communication with Ethernet.

Normally, the ISDN connector 13 is an ISDN
Circuit (usually a network / user interface device such as DSU), and the Ethernet connector 15 is connected to Ethernet (usually a device such as a hub or switch).
Call control and data transfer are performed via the DN communication control circuit 12 and the Ethernet communication control circuit 14. Since the details of the structures of the ISDN communication control circuit 12 and the Ethernet communication control circuit 14 and the details of the communication processing by these are well known, detailed description will be omitted here.

In the above configuration, if the ISDN connector and the Ethernet connector are mistakenly connected, not only communication is impossible but also the Ethernet communication control circuit 14 may be damaged due to the direct current of ISDN.

Therefore, in this embodiment, an ISDN power supply detection circuit 16 for detecting ISDN power supply is connected to the Ethernet connector 15, and the ISDN power supply detection circuit 16 monitors the state of a predetermined signal of the Ethernet connector 15 to detect ISDN. A warning circuit 17 is provided to give a warning to the user when power supply is detected. Warning circuit 17
Is a means that can give a warning to the user who performs the connecting operation of the connectors 13 and 15, such as a buzzer, an LED, a lamp, a voice synthesizing circuit that generates a synthetic voice such as "the cable is incorrectly connected", and a speaker. Anything will do as long as it is.

As described above, the ISDN power supply detection circuit 16,
Further, by providing the warning circuit 17 which gives a warning according to the output of the ISDN power supply detection circuit 16, it is possible to prevent erroneous connection in which the ISDN connector 13 and the Ethernet connector 15 having the same physical shape are mistaken.

The ISDN power supply detection circuit 16 can be composed of a photo coupler or the like. If the photo coupler detects the ISDN power supply, the buzzer, LED, lamp, etc. of the warning circuit 17 are operated. With the simple configuration, the above warning for preventing the incorrect connection can be issued.

Alternatively, the control unit 18 of the facsimile apparatus 11 may perform the control as shown in FIG. 2 to achieve the same purpose. Figure 2 is CP
The control program of the control unit 18 composed of U etc. is shown, and RO is shown as part of the control program of the control unit 18.
It is stored in M19 (or another storage medium).

When the main power of the device is turned on, the ISDN power supply detection circuit 16 constantly monitors the state of the Ethernet connector 15 (step S21 in FIG. 2).

The control unit 18 determines in step S22 that the I
When the output of the SDN power supply detection circuit 16 is monitored and if the ISDN power supply is not detected in the Ethernet connector 15, it is determined that this interface is not connected or is properly connected to the Ethernet (step S23), and this routine is ended.

On the other hand, when the ISDN power supply is detected in step S22, the Ethernet connector 15 is erroneously set to IS.
It is determined that the DN cable is connected (step S2
4) and sends a drive signal to the warning circuit 17,
Warns the user of the facsimile device that the ISDN is erroneously connected to the Ethernet connector (step S25). At this time, when the control unit 18 can utilize the display of the device or the audio output circuit such as the voice synthesis circuit and the speaker, these means can be used as a warning means instead of the warning circuit 17.

As described above, the ISDN power supply detection circuit is provided in the Ethernet interface to warn the user of an erroneous connection between the ISDN and the Ethernet interface, and the device can communicate correctly immediately after connecting the cable. At the same time, damage to the Ethernet communication control circuit 14 can be prevented.

In the above, the ISDN power supply detection circuit 1
Although only a warning is given when the ISDN power supply is detected by 6, the analog switch or the like is provided between the Ethernet communication control circuit 14 and the Ethernet connector 15 of FIG. If the warning is detected, the warning circuit 17 may give a warning, and the connection between the Ethernet communication control circuit 14 and the Ethernet connector 15 may be disconnected. As a result, the possibility that the Ethernet communication control circuit 14 will be damaged by ISDN power supply can be further reduced.

The ISDN power supply detection circuit 16 is not limited to the Ethernet connector 15 but the ISDN connector 13
It is also possible to install it on the side. According to this configuration, for example, the ISDN power supply detection circuit 16 determines whether or not the voltage of the ISDN power supply is sufficient, and when the ISDN power supply voltage is not in the normal state, a warning circuit similar to the warning circuit 17 warns. Can occur.

As described above, the signal condition of the ISDN connector or the Ethernet connector is monitored, and a warning is generated when the connection condition of the ISDN connector or the Ethernet connector is not appropriate according to the result of the monitoring. With this, it is possible to warn the user of a wrong connection of the Ethernet interface, the device can communicate correctly immediately after connecting the cable, and the circuit can be prevented from being damaged, which is an excellent effect.

The control program of the present invention can be stored and supplied not only in the ROM 19 described above, but also in any computer-readable storage medium such as a hard disk, a flexible disk, an optical disk, a magneto-optical disk or a memory card. . It goes without saying that the present invention can be applied not only to a facsimile machine but also to network equipment such as an ISDN router / bridge having both ISDN and Ethernet interfaces.

[0030]

As is apparent from the above description, according to the present invention, a communication device having an ISDN connector connected to an ISDN cable and an Ethernet connector connected to an Ethernet cable, a control method therefor, and a control program. In the above, the ISDN connector or the Ethernet connector is used to monitor the signal status, and a warning is issued when the connection status of the ISDN connector or the Ethernet connector is not appropriate according to the monitoring result. With this, it is possible to warn the user of a wrong connection of the Ethernet interface, the device can communicate correctly immediately after connecting the cable, and the circuit can be prevented from being damaged, which is an excellent effect.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a facsimile device as a communication device adopting the present invention.

FIG. 2 is a flowchart showing a control procedure in the apparatus of FIG.

[Explanation of symbols]

11 Facsimile machine 12 ISDN communication control circuit 13 ISDN connector 14 Ethernet communication control circuit 15 Ethernet connector 16 ISDN power supply detection circuit 17 Warning circuit

Claims (3)

[Claims] 1. An ISDN connected to an ISDN cable
In a communication device having a connector and a LAN connector connected to a LAN cable, a monitoring unit for monitoring a signal state of the ISDN connector or the LAN connector, and the ISDN connector or the LAN connector according to the output of the monitoring unit. A communication device comprising warning means for issuing a warning when the connection state is not appropriate. 2. An ISDN connected to an ISDN cable
In a method of controlling a communication device having a connector and a LAN connector connected to a LAN cable, a signal state of the ISDN connector or the LAN connector is monitored, and a connection state of the ISDN connector or the LAN connector is monitored according to the monitoring result. A method of controlling a communication device, comprising: a control step of issuing a warning when the above is not appropriate. 3. An ISDN connected to an ISDN cable
In a control program of a communication device having a connector and a LAN connector connected to a LAN cable, the signal status of the ISDN connector or LAN connector is monitored, and the connection status of the ISDN connector or LAN connector is monitored according to the monitoring result. A control program for a communication device, comprising: a control step for issuing a warning when is not appropriate.